The dependent variable in an experiment is the one aspect of the experiment that is measured for change to see if it has a relationship to the independent variable. CAUTION: There are two possible answers to this question, depending on how Alex designs his experiment. I will accept either if you offer a valid reason why you feel it is a correct answer.
Ask yourself what Alex will have to measure in order to collect data that will help him answer his question.
Ask yourself what Alex will have to measure in order to collect data that will help him answer his question.
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